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/* 
变量的交换  ：引入一个变量。

*/
 var furit="香蕉";
 var furit1 ="樱桃";
 var table;
 table = furit;
 furit = furit1;
 furit1 =table;
 console.log(furit);
 console.log(furit1);
    </script>
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